This is a lower unit that is in good working condition. 

This part came off of a 2004 Yamaha 40hp 4 stroke outboard engine. The engine was running perfect until it spun the key way on the timing gear. This caused it to jump out of time and quit running. No other parts on the engine were affected except the gear and crank shaft. Message me if you would like pictures of the damage. I will be listing all of the parts so check my other listings if you need something.